Resultados de la búsqueda
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A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data
Sea Region incorporating multi-year mark-recapture data Abstract / Description: An exploratory ... of tagged fish and subsequent multi-year data of recapture of tagged fish in conjunction with fishery ... catch-at-age data. This is the first published stock assessment of toothfish in the Ross Sea region. It ... showed the data selection provided a precautionary estimate of biomass, and that these estimates were ... seA regIon IncorporAtIng multI-yeAr mArk-recApture dAtA S. Mormede and A. Dunn National ... subsequent multi-year data of recapture of tagged fish in conjunction with fishery catch-at-age data. This ... data selection provided a precautionary estimate of biomass, and that these estimates were insensitive ... fluctuations as the time series develops, a signal which is not present in the fishery-dependent data ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Autor(es): Mormede, S., A. Dunn and S.M. Hanchet
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Developing the Secretariat’s data management systems
Abstract: The CCAMLR Secretariat’s data management systems provide the secure infrastructure and ... repository for CCAMLR data which are submitted by CCAMLR Members to support the policy, scientific and ... and data elements of the enterprise data model, data warehouse, quality assurance, reference data ... , data extracts and metadata, and the appraisal of candidate systems for automated loading of, and ...
Meeting Document : SC-CAMLR-XXXV/BG/25 Rev. 1 : Autor(es): CCAMLR Secretariat
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Integrated models for Antarctic krill (Euphausia superba) using survey data from 1981–2014 in Subarea 48.1
extended to include estimates of krill growth consistent with survey data and to use multi-nation survey ... data collected from 1981 to 2014 near the Antarctic Peninsula. Four models of the population dynamics ... of Antarctic krill in Subarea 48.1 based on different aggregations of the data are described to ... illustrate the capabilities of the framework. Survey data collected by Germany (RMT8 net sampling from 1981 ...
Meeting Document : WG-SAM-14/20 : Autor(es): D. Kinzey, G.M. Watters and C.S. Reiss (USA)
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DEVELOPMENT OF A METHODOLOGY FOR DATA QUALITY ASSESSMENT
biological sampling data from a fishing trip. In particular these measures aim to quantify the prevalence of ... position or time reporting errors, the diversity of catch, the extent to which catch data follow Benford ... 's Law for the distribution of the first significant digit, whether length-frequency data have been ... assist in assessing which data from a trip should be used in an assessment, and can also guide how these ...
Meeting Document : WG-SAM-08/13 : Autor(es): D.A.J. Middleton and A. Dunn (New Zealand)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
tag recapture data. Examining the impact of considering a subset of the available data simulates both ... time as more years’ data becomes available. The 2009 stock assessment of Antarctic toothfish in the ... Subarea 88.2E was used as a sensitivity to examine the impact of withholding data from an assessment based ... on a smaller and shorter data set. In both instances the ‘base case’ model was used, i.e., the models ...
Meeting Document : WG-SAM-11/17 : Autor(es): S. Mormede (New Zealand)
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Use of biological data to inform bioregionalisation of the Southern Ocean
spatially comprehensive species distribution layers from discontinuous biological data, by fitting complex ... and scale-dependent relationship between species abundance and available environmental data. These ... biological data without the need for environmental proxies. We describe one method, called BRT (Boosted ... aggregate data layers for pelagic zooplankton using a circumpolar dataset collected by Continuous Plankton ...
Meeting Document : WS-BSO-07/7 : Autor(es): M. Pinkerton, B. Sharp and J. Leathwick (New Zealand)
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DEVELOPING A ‘BEST AVAILABLE SCIENCE’ BATHYMETRIC DATA FRAMEWORK FOR FISHERIES MANAGEMENT IN THE ROSS SEA
Abstract: Bathymetric data are used inter alia to define management boundaries, implement ... -based management through bioregionalisation. Several data sources for bathymetric data exist, and these ... sources improve with time through additional data collection and analytical methods. In addition, the ... available science” bathymetric data for the Ross Sea region along with a set of spatial tools in the form of ...
Meeting Document : WG-FSA-09/38 : Autor(es): S.J. Parker, S.M. Hanchet, B. Wood and A. Dunn (New Zealand)
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Development of an algorithm designed to assess observer data quality and performance
Abstract: As part of the Secretariat task to ensure the quality and consistency of the data ... arising from the CCAMLR SISO, an algorithm was designed to automatically import and check data entered by ... fishery logbooks. In its current version the algorithm is able to detect and report invalid data formats ... weight of toothfish, and, an overall data entry quality score, are automatically generated. The first ...
Meeting Document : WG-SAM-13/40 : Autor(es): Secretariat
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A bathymetric data framework for conservation in the Ross Sea region
Abstract: Bathymetric data are currently used inter alia to define management boundaries ... inform ecosystem-based management through bioregionalisation. Several data sources for bathymetric data ... exist, and these sources improve with time through additional data collection and improved analytical ... methods. We developed an algorithm to summarize bathymetric point data (x,y,z) for the Ross Sea region to ...
Meeting Document : WG-SAM-10/18 : Autor(es): S.J. Parker, B. Wood, S.M. Hanchet and A. Dunn (New Zealand)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
), using revised catch, CPUE, catch-at-age and tag-recapture data from New Zealand vessels. The updated ... entirely due to the impact of the catch-at-age data from the shelf fishery. Parameterising the model to ... better explain these data resulted in estimates of initial and current biomass that were very similar to ... those presented in 2005. The inclusion of the 2005 tag-release and the 2006 tag-recapture data had a ...
Meeting Document : WG-FSA-06/60 : Autor(es): A. Dunn and S.M Hanchet (New Zealand)